[sdiy] Sonic qualities of parts..

[Paul Perry]

They are also magnificently microphonic.
One of the electronic mags ran a project for an "engine repair" stethoscope,
using one glued to the end of a screwdriver as a microphone for listening to
suspicious car sounds.

paul perry Melbourne Australia

-----Original Message-----
>To counter the bad news, they are incredibly cheap compared to other  
>ceramic dielectrics.  And I've even heard of applications that make  
>use of this effect as voltage-controlled capacitors in RF  
>applications.  Unfortunately for us you only get about 10:1 range  
>(about 3 octaves).